Severe Thunderstorms and Heavy Rainfall Across the Midwest into the Great Lakes Region; Significant Heat in the Southwest

Strong to severe storms may produce damaging winds, isolated hail, and a few tornadoes from the Midwest into the lower Great Lakes. These storms may also produce areas of heavy rain and flash flooding. Significant heat will continue across parts of the Desert Southwest into western Texas and north Alaska. Dangerous heat will also build into the Eastern and Central U.S. and continue into next week. Read More >

Current conditions at

Ottawa Putnam County Airport (KOWX)

Lat: 41.04°NLon: 83.98°WElev: 763ft.

Fair

86°F

30°C

Humidity 70%
Wind Speed S 10 G 22 mph
Barometer 29.79 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 18 Jun 5:55 pm EDT
Extended Forecast for

2 Miles SSE Grelton OH

Severe T-storm Watch June 18, 06:04pm until June 18, 10:00pm
Click here for hazard details and duration
...
  •  
    Severe T-storm Watch June 18, 06:04pm until June 18, 10:00pm

    NOW until 10:00pm Wed

    Severe T-storm Watch

  • Tonight

    Low: 67 °F

    Severe
    Thunderstorms
    then Slight
    Chance
    T-storms

  • Juneteenth

    Juneteenth: A 40 percent chance of showers, mainly before 3pm.  Mostly cloudy, with a high near 75. West wind around 15 mph, with gusts as high as 25 mph.

    High: 75 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. Southwest wind 5 to 10 mph.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 84. Southwest wind 5 to 10 mph.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 68. South wind around 10 mph.

    Low: 68 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 90.

    High: 90 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

Detailed Forecast

Tonight
Showers and thunderstorms before 2am, then a slight chance of showers. Some of the storms could be severe. Low around 67. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Juneteenth
A 40 percent chance of showers, mainly before 3pm. Mostly cloudy, with a high near 75. West wind around 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 61. Southwest wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 84. Southwest wind 5 to 10 mph.
Friday Night
Partly cloudy, with a low around 68. South wind around 10 mph.
Saturday
Mostly sunny and hot, with a high near 90.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny and hot, with a high near 95.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny and hot, with a high near 95.
Monday Night
Mostly clear, with a low around 75.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 94.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Wednesday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Grelton OH
 41.26°N 84.04°W (Elev. 699 ft)
5:32 pm EDT Jun 18, 2025
6pm EDT Jun 18, 2025-6pm EDT Jun 25, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database